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C. M BEYNARD. APPARATUS FOR GRINDING COLD ROLLS.

APPLICATION FILED MAY 6. 1914. I

Patented Aug. 29, 1916.

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C. M. REYNARD. APPARATUS FOR GRINDING COLD ROLLS.

APPUCATION FILED MAY 6. 19M

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c. M. REYNARD. APPARATUS FOR GRlNDiN G COLD ROLLS.

APPLICATEON FILED MAY 6, i914.

Patented Aug. 29, 1916.

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CHARLES M. REYNARD, OF MOKEESPORT, PENNSYLVANIA, ASSIGNOB. TO IVIGKEESPORT TIN PLATE COMPANY, OF MGKEESPORT, PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA.

APPARATUS FOR GRINDING COLD-ROLLS.

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Specification of Letters Patent. Patgntgd A g. 29, 191105 Application filed May 6, 1914.. Serial No. 836,729.

To all whom it may concern:

Be it known that I, CHARLES M. REYNARD, a citizen of the United States, and resident of McKeesport, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Apparatus for Grinding Cold-Rolls; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates grinding cold-rolls.

The object of the invention is to provide a simple and efflcient form of apparatus for grinding cold-rolls in a tin-plate mill, which can be readily set up in position on the housings for grinding, and adjusted properly withreference to the rolls to give the proper grinding effect, and at the same time providing for the automatic reversal of the travel of the grinding-wheels along the rolls. In the drawings Figure 1 is a plan view of my improved apparatus, thehousings being shown in section; Fig. 2 is a front elevation; Fig. 3 is a side view with the rolls in section; Flg. 1 is a side view showing the drive for the grinding rolls and the traveling carriage; and Fig. 5 is a section on the line 5-5 Fig. 2. j

In the drawings the numeral 2 designates a suitable pair of cold-rolls mounted in suit able housings 3. The housings 3 have the brackets 4 which form a support for the inner end of the base 5, the outer end of said base having the extensible legs 6 which are adapted to rest on a suitable support 7. Resting upon the base 5 and pivotally mounted on the pin 9 at its mid-point is the plate 8. This plate 8 forms the support for. the carriage 10 which engages the dove-tail guide 11 on said plate and is adapted to move back and forth thereon.f To provide for this longitudinal movement of the carriage 10 a feed-screw 12engages the threaded openings 13 in the lug 14 on said carriage. These'lugs 14 extend down into the openway 15 in the plate 8 and within which the feed-screw 12 is located.

The feed-screw 12 is driven in the following manner: At one end of said feedscrew are the sprocket-wheels 16 and 17, loosely mounted thereon, and provided with the clutch-faces 18 and 19, respectively. The sprocket chains 20 and 21 engage the sprocket-wheels 16 and 17 respectively, and

to apparatus for also the sprocket-wheels 22 and 23 on the shaft 24. The shaft 2 1 is mounted in suitable bearings 25 in brackets 26 on the base 5. The chain 20 passes down and around the sprocket-wheel 20? on the bracket 20 and said chain. moves in contact with the sprocket-wheel 16 as shown in Fig. 4. In this manner the sprocket-wheels.16: and 17 are rotated in opposite directions. A gearwheel, 27 is mounted on the shaft 2-1 and is adapted to .move back and forth on the keyway 2 This gear-wheel 27 is engaged by the Morse chain 27 which in turn engages the pinion 28 on the shaft 29 of the motor 30.

The motor 30 is mounted on the pedestal 31 of the carriage 10.

Toprovide for the reversing of the feedscrew 12 the clutch-member 32 is mounted to slide on said feed-screw between the clutch-faces 18 and 19. An arm 33 connects the clutch-member .32 with the rod 3 1, said arm being fulcrumed at 35. The rod 3% is off-set as at 3% and is provided with the slots 36 through which the pins 37 on the plate 8 pass, said pins being provided with the nuts 38 which secure said rod to the plate 8, said rod however having a certain amount of end movement governed by the slots 36.' The rod 3st is further provided with the slots 39 Within which the adjustable stops 40 are secured, said stops d0 having the threaded portion 11 which extends through the slot and is engaged by the nut 4L2 with the handle e3. 13y loosening the nut the stop may be located at any point in the slot. These stops 10 are in the path of the buffers n on. the carriage. 10. These buffers consist of the bolt which is contained within the socket 4L6, a spring d7 being interposed between the inner end of said bolt and the socket. The socket 16 is provided With the slot d8 with which the stop 40 engages.

The pedestal 31 is transversely movable on the carriage 10 being mounted to move in guides on said carriage anda feed-screw 48 engages a threaded nut 49 on said pedestal, so that by the turning of said feed-screw 48 by applying a wrench to the outer end 50 thereof said pedestal may be moved to and from the rolls.

A sprocket-wheel 51 is mounted on the shaft 52 journaled in the pedestal 31, and a chain 53 engages said sprocket-wheel, and

, shaft 24 and a sprocket-wheel 54 at the outer end of the inclined support 55 carried by the pedestal 31. This sprocket-wheel 54 is mounted on the shaft 56; said shaft carries the suitable grinding-wheels 57.

Rotary movement is imparted to the shaft 51 by the chain 58 which engages the sprocket-wheel 59 on the shaft 52 and the sprocket-wheel 60 on the motor-shaft.

When the apparatus is in use in the grinding of the rolls 2 it is supported in front of the housing 3 in the manner shown in Fig. 3, by resting on said housings and on the legs 6. The proper adjustment of the partshaving been made the motor is put in operation and through the connections de scribed rotary movement is imparted to the from thence to the feed screw 12, as well as to the grinding-wheels 57. With the clutch in engagement with the clutch-face 19, let it be assumed that the carriage 10 is traveling to the left as shown in Fig. 2, the grinding wheels being in contact with the rolls 2. As the carriage continues to move to the left, the buffer-bolt 45 will engage the stop 40 on the left side, and this will act to move the rod 34 toward the left and through the arm 33 the clutch-member 32 will be thrown into engagement with the clutch-face 18 which will cause a reversal of the feed-screw l2 and likewise a reversal of the carriage 10. By having the buffer-bolt 4L5 yieldinglymounted, if there is any resistance offered to the movement of rod 34 due to the clutch-faces not registering at that particular moment, the yielding of the buffer-bolt allows time for the clutchfaces to engagewithout undue strain on the parts. Upon the reversal of the feed screw 12 the carriage 10 moves to the right and continues in this direction until the bufier on the right hand side comes in contact with the corresponding stop 40 whereupon the clutch 32 is again shifted and the feedscrew 12 reversed. In this manner provi sion is made for the traveling of the grinding disks along the rolls and the automatic reversal of this movement so that when once the parts are properly adjusted, the machine works without further attention from the operator. Provision is made for the movement of the rod 34: by the hand lever 61 where it is desired to reverse the movement of the feed-screw before it is accomplished by the automatic arrangement.

The adjustment of the grinding disks 57 to and from the rolls is readily accomplished by the turning of the feed-screw 48.

WVhile I prefer to employ the motor 30 mounted on the carriage, it is apparent that the shaft 24 may be rotated by power applied to the pulley 62 shown in Fig. 2.

By'having the plate 8 pivotally mounted on the base 5 the grinding disks may be adj Listed in such position with reference to the rolls as to give any desired contour to the rolls, such as where it is desired to give a convex surface to the same.

By my invention I provide a simple and compact form of grinding apparatus which may be swung from an overhead crane into position in front of the housing of any set of rolls, and quickly installed in position so that the delay in the operation of the mill is greatly reduced and the grinding operation accomplished with speed as well as with great accuracy.

Furthermore the entire grinding operation is performed without removing the rolls from the housings and the time and labor incident to such an operation is obviated.

What I claim is:

1. In grinding apparatus for cold. rolls, the combination with the roll housings, of brackets projecting from said housings, a portable grinding machine frame supported at one side on said brackets beyond the housings and having extensible legs giving support thereto, a feed screw mounted in said frame, a longitudinally movable carriage traveling thereon and engaged by said screw, a grinding disk on said carriage, and means supported on the carriage for rotating same,

and means on the carriage for rotating said J feed screw, and means operated by the car riage for reversing the rotation of said feed screw.

2. In grinding apparatus for cold rolls, the combination with roll housings having suitable projecting brackets, of a portable grinding apparatus having its base plate supported at one side on said brackets, adjustable legs supporting the other side of said ase plate beyond said housings, a longitudinally movable carriage traveling on said base plate, a motor supported on said carriage, a downwardly inclined frame carried on said carriage, a grinding disk mounted at the lower end of said frame, driving connections from the motor to said grinding disks, and means on the carriage for reversing the longitudinal travel of said carriage.

3. In grinding apparatus for cold rolls, the combination with roll housings hai ing suitable projecting brackets, of a portable grinding apparatus having a base plate supported on said brackets, a longitudinally movable carriage traveling on said base plate, a motor supported on said carriage, a transversely movable support on said carriage carrying a downwardly inclined frame, a grinding disk mounted at the lower end of said frame, driving connections from the motor to said grinding disk, and means on the carriage for reversing the longitudinal travel of said carriage.

4. In grinding apparatus for cold rolls, the combination with roll housings having l (Hi suitable projecting brackets, of a portable grinding apparatus having its base plate supported at one end on said brackets, adjustable legs supporting the other end of said base plate, a longitudinally movable carriage traveling on said base plate, a motor supported on said carriage, a transversely movable support on said carriage carrying a downwardly inclined frame, a grinding disk mounted at the lower end of said frame, driving connections from the motor to said grinding disk, and means for reversing the longitudinal travel of said carriage.

5. In apparatus for grinding cold-rolls, the combination with a suitable support of a feed-screw, means for rotating same, a longitudinally movable carriage engaging said feed-screw, a grinding disk on said carriage, means for rotating same, a clutch member on said feed-screw, a longitudinally movable rod, connections between said rod and said clutch member, a projection on said rod, said projection being in the path of said buffer.

6. In apparatus for grinding cold-rolls, the combination with suitable support, of a feed-screw loosely mounted clutch members on said feed-screw, means for driving same, a movable clutch member on said feedscrew and carrying a yieldingly mounted buffer, a longitudinally movable carriage engaging said feed-screw, a rotary disk on said carriage, means for driving same, a longitudinally movable rod, connections between said rod and said movable clutch member, said carriage having a socket, yieldingly mounted buffer in said socket, and a projection on said rod adapted to be engaged by said bufler bolt.

In testimony whereof, I, the said CHARLES M. REYNARD, have hereunto set my hand.

CHARLES M. REYNARD.

Witnesses:

ROBT. D. TOTIEN, JOHN F. WILL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

